Wednesday, January 16, 2013
OK1DPX, has made a wonderful job of his Sputnik transmitter reproduction. Plug-in modules allow for multi-band operation. He even included an on-board vacuum tube multivibrator (beep-beeper). Petr details his work in the current, Bulletin of the OK QRP Club. Please click here to download his article (presented by permission).
Congratulations and well-done, Petr!